美国食品与药物管理局尚未对银杏制剂和其它保健品进行规范化管理，商标不同，药品的效力和纯度也不一样。

Since the Food and Drug Administration do not regulate ginkgo and other supplements, potency and purity vary from brand to brand.

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美国食品与药物管理局尚未对银杏制剂和其它保健品进行规范化管理，商标不同，药品的效力和纯度也不一样。

Since the Food and Drug Administration do not regulate ginkgo and other supplements, potency and purity vary from brand to brand .

youdao